Home / 1,405.62-2,108.37-943.59

Finding the Fourth Proportional to 1,405.62, 2,108.37 and 943.59

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Solution

The fourth proportional to 1,405.62, 2,108.37 and 943.59 is: 1,415.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405.62 : 2,108.37 = 943.59 : x
  2. Step 2: Convert to fraction form
    1,405.62/2,108.37 = 943.59/x
  3. Step 3: Cross multiply
    1,405.62x = 2,108.37 × 943.59
  4. Step 4: Simplify right side
    1,405.62x = 1,989,436.85
  5. Step 5: Solve for x
    x = 1,989,436.85/1,405.62
  6. Step 6: Final answer
    x = 1,415.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.